virtual subdomain and cakephp

i want use virtual subdomain like this:

example: eee.domain.com

how can i config cakephp to work with this subdomain,and how can i
config apache to work with this subdomain,
and how can i config my localhost server(i am use xampp)?

i am new in cake and apache.
my problem like this:
http://groups.google.com/group/cake-php/browse_thread/thread/d3e72b36102b484d/dc504516706d00f6?lnk=gst&q=subdomain#dc504516706d00f6

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